What does correlational mean?
"Correlational" is an adjective used chiefly in statistics, psychology, and other sciences to describe anything relating to correlation — the degree to which two or more variables change together. Its most significant use is in research methodology: a "correlational study" measures natural relationships among variables, such as diet and mood, without manipulating any of them. This distinguishes it from experimental research, where conditions are actively controlled to test for causation. Because correlated variables may share a hidden common cause, or the apparent link may be coincidental, describing findings as "merely correlational" is a standard caveat in scientific writing and journalism. The word derives from "correlation," itself built on the Latin prefix "com-" (together) and "relatio" (a bringing back or referring), reflecting how two things can be related to one another. For anyone interpreting research headlines, understanding what "correlational" implies — association, not proof of cause — is essential to reading claims about health, behaviour, and society with appropriate scepticism.
adjectiveRelating to or based on correlation, especially the statistical relationship between two or more variables. In research contexts, it describes studies that measure associations between variables without manipulating them or establishing cause and effect.
- Relating to statistical correlation between variables.
- (Of research) involving the measurement of associations between variables without manipulation or intervention.
"The study was correlational rather than experimental, so it could not prove that screen time causes poor sleep."
"The researchers used a correlational design, measuring income and life satisfaction across thousands of households."
"Because the evidence is merely correlational, we cannot conclude that coffee consumption extends lifespan."
A correlational study can tell you that two things move together — but it can never tell you which one is pulling the other.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of correlational
"Correlational" derives from "correlation," formed in English from the verb "correlate," which combines the Latin prefix "com-/cor-" (together) with "relationem," from "referre" (to carry back or refer). The noun "correlation" emerged in scientific usage in the mid-sixteenth century, initially in philosophical contexts, before acquiring its modern statistical sense through the work of Francis Galton and Karl Pearson in the late nineteenth century. The adjectival form "correlational" arose as statistics and the social sciences matured, when researchers needed a term to distinguish non-experimental designs from true experiments.
How correlational is actually used
Primarily a technical term used in statistics, psychology, and the social sciences. It carries an important methodological connotation: calling evidence 'merely correlational' signals that it cannot establish causation, and this caution is often emphasized in scientific writing and popular coverage of research findings.
Easily confused with correlational
"Correlation" is a noun referring to the mutual relationship between variables, while "correlational" is the adjective describing things that involve or are based on such a relationship.